Tubular folding and collapsible core



Aug. 28, 1923.

Filed Jan. i4. 1922 Patented Aug. 28, 11223.

ARTHUR J'. GUILEY, OF HAR'IVILLE, OHIO.

TUBULAR FOLDING AND COLLAPSIIBLE CORE.

Application filed Ianuary14, 1922. Serial No. 529,231.

To all it may concern..-

Be it known that I, ARTHUR J. GUILEY, a citizen of the United States, residin at Hartville, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Tubular Folding and Collapsible Cores; and I do hereby declare' the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appe-rtains to make and use the same.

In the manufacture of pneumatic tires, a metal core is utilized as a form upon which the tire is built. This core is usually solid and in consequence is heavy and requires the services of two persons to manipulate the same.

In accordance with the present invention, the core is tubular and comprises a plurality of sections which are hingedly 'connected, the joints having overlapping portions to prevent pinching of the tire when placing the core in position and expanding the same.

Other objects and advantages will be apparent and suggest themselves as the nature of the invention is understood.

While the drawings illustrate an embodiment of theinvention' it is to be understood that in adapting the same to meet different conditions and requirements, various changes in the form, proportion and minor details of construction may be resorted towithout departing from the nature of the invention.

Referring to the accompanying drawings forming a part of the application,

Figure lis an elevation of a core embodying the invention, the dotted lines showing the same collapsed,

igure 2 is a transverse section "on the line 22 of Figure 1,

Figure 3 is a detail section on the line 3-3 of Figure 1, and

Figure 4 is a detail view showing the lock joints between the key section and the abuttin main sections.

(Forresponding and like parts are referred to in the following description and designated in the several views of'the drawings by like reference characters. 1

The core is constructed of metal and is tubular and comprises a plurality of sections. The number of sections may vary and Will depend largely upon the size of the core. In the present instance, the core comprises two main sections 1 and 2 and a key section 3. The key section 3 is hingedly connected to the main section 1 at 4 and the main sections 1 and 2 are 'hingedly connected at 5. The hinge joints 4 and 5 may be of any construction 0 admitting of a pivotal movement of the parts. The hinge joints are in line with the inner wall of the core whereby to admit of the sections swinging inward and limited in their outward movement by butt joints. The section 1 has a tongue or projection 6 and the section 3 is formed with a groove or recess 7 to snugly receive the tongue 6 when the sections 1 and 3 are in circumferential. line. The matching tongue 6 and groove *7 revent lateral displacement of the sections 1 and 3 and preclude pinching of the tire when expanding or opening the section 3 to bring it in line with the section 1.

The joint formed between the sections 2 and 3 is loose, whereby said sections may swing inwardly, as indicated by the dotted lines in Figure 1. The section 2 is provided with a tongue or projection 8 and the section '3 has a. groove or recess 9 to snuglyreceive the tongue 8. This matching tongue and groove prevents lateral displacement of the sections 2 and 3 at the joint and obviates pinching of the tire when said sections are extended or brought into circumferential alinement. A catch 10 secures the sections 2 and 3 when in alined position and may be of any preferred construction and arrangement.

The knife joints 4 and 5 comprise a transverse pin 12 and cooperating hooks 11, the pin 12 being applied to one of the partswith its ends projecting laterally. The. hooks 11 are applied to the other part and engage the'p-roj'ecting ends of the pin. If required the sections may be readily separated by disengaging the hooks 11 from the pins 12.

The tubular formation of the core renders the same comparatively light so that it may be readily handled by one person, thereby ablling pivotal movement and detachment of the sections.

2. A core having a plurality of sections foldable relatively to each other, a key sec-' 5 tion for disposition between them,

section having its end edges tapering toward each other'and toward the periphery core, the first mentioned sections havlng proections toward each W of the core and overlapping the opposite end portions of the key section, said key sec tion having cutaway portions extending in- Wardly from the periphery thereof to ansaid key of the other at the periphery oose? commodate said projections, acatch to secure said key section to one of the other sections, and a pin and hook connection between the key section and the other of the first mentioned sections to pivotally and detaohabty connect them.

ture in presence of two Witnesses.

ARTHUR J; GUILEY. Witnesses:

JAs. H. STEELE, W. H. Gomes.

In testlmony'iwhereof I afix my signa- 2o 

